Boiler.



PATENTED JUNE 6, 1905. J. RODRIGUEZ Y FONOLL.

BOILER.

No. 791.947. PATENTBD JUNB 6, 1905. J. RODRIGUEZ Y PONOLL.

BOILER.

APPLIOATION FILED SEPT. 2a, 1904.

2 SHIETS-SHEBT 2. Z. 107

Witnesse Httomegs UNITED STATES Patented June 6, 1905.

PATENT OFFICE,

BOILER.

SPECIFICATION forming part of Letters atent N o. 791,947, dated June 6,1905.

Application filed September 28, 1904:. Serial No. 226,380.

T0 a/J whom it may concern:

Be it known that I, JACINTO RODRIGUEZ Y FONOLL, a citizen of theRepublic of Cuba, residing at Cienfuegos, Cuba, have invented a new anduseful Boiler, of which the following is a specification.

This invention relates to steam-boilers and steam-boiler furnaces, andhas for one of its objects to provide a novel form of water-tube boilerin which the heat of the products of combustion will be fully utilized.

A further object of the invention is to construct a water-tube boiler soarranged and connected with a plurality of intervening drums as topermit the effective circulation of the water.

l/Vith these and other objects in view, as will more fully hereinafterappear, the invention consists of the novel construction and arrangementof parts hereinafter fully described, illustrated in the accompanyingdrawings, and particularly pointed out in the appended claims, it beingunderstood that various changes in the form, proportions, size, andminor details of the structure may be made without departing from thespirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is a perspective view of asteam-boiler constructed in accordance with the invention. Fig. 2 is aface view of the same with the front casing removed in order to moreclearly illustrate the construction.

Similar numerals of reference are employed to indicate correspondingparts throughout the several figures of the drawings.

The front header 1 and rear header 2 are approximately rectangular inform and are connected by water-tubes 3 in the usual manner to.the twosides of the headers and ar ranged at an oblique angie. At a point belowthe rear portion of the tubes 3 is a transversely-disposed drum 4, intowhich the feedwater is forced through a pipe 5, provided with the usualcontrolling-valves, and at a point above and at about midway of thelength of the tubes is an intermediate circulatingdrum 6, that isconnected to the lower entrance-drum 4 by means of side tubes 7, one ofsuch tubes being disposed on either side of from the top or front of theboiler.

the main tubes. This intermediate drum is further connected to the topof the rear header 2 by means of a bank of tubes 8.

At a point near the front of and above the tubes 3 is a largetransversely-disposed drum 9, forming a steam-dome in which the steammay be led off through a main 10 to the engine or the point ofconsumption. The front drum is connected to the intermediate drum by abank of tubes 10 and is connected to the upper portion of thefront,header by a bank of tubes 11.

The several parts of the boiler are inclosed within a suitable wall orcasing 12, and the bridge-wall 13 at the rear of the combustionchamberis continued up to the lower edge of the intermediate drum 6, forming aninclined bafiie-plate 14, so that all of the products of combustion fromthe chamber will be compelled to pass up through the space between thedrums 6 and 9. To the rear of the baffie-plate 14 is a secondbafileplate 15, extending from the top of the lower feed-drum 4 to thetop of the inclosing casing, and the products of combustion musttherefore pass downward in contact with the tubes 3 and under the drum 4and after again passing in contact with the tubes 3 escaping at theoutlet 16 to the stack. At the front of the boiler is atransversely-disposed wall 18, extending between the top of the frontheader and the front portion of the drum 9, so as to prevent any of theproducts of combustion escaping At the lower portion of the rear headerare hand-holes closed in the usual manner, and the upper portion of theboiler is provided with the usual gage-cocks 21 for indicating theamount of water in the boiler. At the rear of the lower header is ablow-off pipe 22, through which any accumulations may be discharged, andat the top of the main drum 9 is a safetyvalve 23, of the usualconstruction.

The products of combustion from the boiler pass upward from thecombustion-chamber in contact with the tubes 3 and 10 and also impingingagainst the under side of the main drum 9, after which they are directedover the top of the intermediate drum 6 and thence downward between thetwo baffle-plates 14 IOO and 15 to again come into contact with thetubes 3. The heated gases then pass down and under the inlet-drum 4; andthence upward to the rear of the bafiie-plate 15 in contact with therear ends of the water-tubes, and finally escape to the stack.

The water entering the inletdrum 4 is compelled to pass upward throughthe inclined tube 7 to the opposite ends of the intermediate drum 6 andthenee fiows through the up per bank of tubes 8 to the rear header andfrom thence is directed upward and forward through the tubes 3 to thefront header, from whcnce it passes through the front bank of tubes 11to the front steam-drum 9, while communication between the drums 9 and 6is established by means of the upper bank of tubes 10. This provides forthe thorough circulation of the water, so that it may be subjected whilein the tubes to the products of combustion, the course of the latterbeing such that the circulation is natural and the water heated from thetime of its entrance to the inlet-drum to its final escape in the formof vapor through the main steam-pipe 10.

In the lower portion of the combustion- Chamber is arranged a pair ofrails 25, that extend outward on the floor of the boilerhouse and leadto similar rails of a small turntable 26, that is arranged in a pit atthe front of the boiler. On these rails is mounted a wheeled truck 27,carrying a grate 28, the latter being of any suitable construction inaccordance with the character of the fuel to be employed.

ln the operation the lower doors maybe opened and the truck wheeled outat an;3 time, and, if necessary, the truck may run onto the turn-tableand its position reversed before it is returned to said combustionchamber. This permits of the thorough cleaning of the grate andfacilitates repairs and at the same time is of advantage in that itsremoval will permit entrance to the bridge-wall without rendering itnecessary for the workmen to crawl over the grate-bars.

Having thus described the invention, what is claimed is 1. ln asteam-boiler, front and rear headers, obliquely-disposed water-tubes connecting the same, an inlet-drum disposed below the tubes, an uppersteam-drum, an intermediate drum connected to both the inlet and steamdrums,

and tubes connecting the steam-drum to the front header.

2. In a steam-boiler, front and rear headers, obliquely-di'sposed tubesconnecting the head.- ers, a water inlet drum, an upper steamdrum, anintermediate drum connected to both the water-inlet and steam drum, andbaf tie-walls disposed intermediate of the length of the tubes.

3. In a steam-boiler, front and rear headers, obliquely-disposedwater-tubes connecting the headers, a pair of drums disposed one aboveand one below the tubes, and baflle-walls extending across the tubes andterminating at said drums.

4. In a boiler, the combination with the front and rear headers, of aplurality of obliquely disposed water tubes, a drum arranged above theline of tubes, a baflie-wall forming a continuation of the bridge-wallof the combustion-chamber and terminating at the drum, a water-inletdrum arranged to the rear of the bridge-wall and below the tubes, and asecond baflle-wall extending upward from said inlet-drum to a pointabove the line of the tubes.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in the presence of two witnesses.

JACINTO RODRIGUEZ Y FONOLL.

Vitnesses:

NGEL CARAGOLL, RAFAEL SNCHEZ.

